657 lines
17 KiB
Go
657 lines
17 KiB
Go
package transport
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import (
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"bytes"
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"context"
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"crypto/ecdsa"
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"database/sql"
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"encoding/hex"
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"fmt"
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"sync"
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"time"
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"github.com/google/uuid"
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"github.com/pkg/errors"
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"go.uber.org/zap"
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"github.com/ethereum/go-ethereum/common"
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"github.com/status-im/status-go/eth-node/crypto"
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"github.com/status-im/status-go/eth-node/types"
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)
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var (
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// ErrNoMailservers returned if there is no configured mailservers that can be used.
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ErrNoMailservers = errors.New("no configured mailservers")
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)
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type transportKeysManager struct {
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waku types.Waku
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// Identity of the current user.
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privateKey *ecdsa.PrivateKey
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passToSymKeyMutex sync.RWMutex
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passToSymKeyCache map[string]string
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}
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func (m *transportKeysManager) AddOrGetKeyPair(priv *ecdsa.PrivateKey) (string, error) {
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// caching is handled in waku
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return m.waku.AddKeyPair(priv)
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}
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func (m *transportKeysManager) AddOrGetSymKeyFromPassword(password string) (string, error) {
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m.passToSymKeyMutex.Lock()
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defer m.passToSymKeyMutex.Unlock()
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if val, ok := m.passToSymKeyCache[password]; ok {
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return val, nil
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}
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id, err := m.waku.AddSymKeyFromPassword(password)
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if err != nil {
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return id, err
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}
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m.passToSymKeyCache[password] = id
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return id, nil
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}
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func (m *transportKeysManager) RawSymKey(id string) ([]byte, error) {
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return m.waku.GetSymKey(id)
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}
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type Option func(*Transport) error
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// Transport is a transport based on Whisper service.
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type Transport struct {
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waku types.Waku
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api types.PublicWakuAPI // only PublicWakuAPI implements logic to send messages
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keysManager *transportKeysManager
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filters *FiltersManager
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logger *zap.Logger
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cache *ProcessedMessageIDsCache
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mailservers []string
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envelopesMonitor *EnvelopesMonitor
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quit chan struct{}
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}
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// NewTransport returns a new Transport.
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// TODO: leaving a chat should verify that for a given public key
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// there are no other chats. It may happen that we leave a private chat
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// but still have a public chat for a given public key.
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func NewTransport(
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waku types.Waku,
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privateKey *ecdsa.PrivateKey,
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db *sql.DB,
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sqlitePersistenceTableName string,
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mailservers []string,
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envelopesMonitorConfig *EnvelopesMonitorConfig,
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logger *zap.Logger,
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opts ...Option,
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) (*Transport, error) {
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filtersManager, err := NewFiltersManager(newSQLitePersistence(db, sqlitePersistenceTableName), waku, privateKey, logger)
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if err != nil {
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return nil, err
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}
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var envelopesMonitor *EnvelopesMonitor
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if envelopesMonitorConfig != nil {
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envelopesMonitor = NewEnvelopesMonitor(waku, *envelopesMonitorConfig)
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envelopesMonitor.Start()
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}
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var api types.PublicWhisperAPI
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if waku != nil {
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api = waku.PublicWakuAPI()
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}
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t := &Transport{
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waku: waku,
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api: api,
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cache: NewProcessedMessageIDsCache(db),
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envelopesMonitor: envelopesMonitor,
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quit: make(chan struct{}),
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keysManager: &transportKeysManager{
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waku: waku,
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privateKey: privateKey,
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passToSymKeyCache: make(map[string]string),
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},
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filters: filtersManager,
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mailservers: mailservers,
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logger: logger.With(zap.Namespace("Transport")),
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}
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for _, opt := range opts {
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if err := opt(t); err != nil {
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return nil, err
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}
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}
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t.cleanFiltersLoop()
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return t, nil
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}
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func (t *Transport) InitFilters(chatIDs []string, publicKeys []*ecdsa.PublicKey) ([]*Filter, error) {
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return t.filters.Init(chatIDs, publicKeys)
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}
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func (t *Transport) InitPublicFilters(chatIDs []string) ([]*Filter, error) {
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return t.filters.InitPublicFilters(chatIDs)
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}
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func (t *Transport) Filters() []*Filter {
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return t.filters.Filters()
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}
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func (t *Transport) FilterByChatID(chatID string) *Filter {
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return t.filters.FilterByChatID(chatID)
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}
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func (t *Transport) FilterByTopic(topic []byte) *Filter {
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return t.filters.FilterByTopic(topic)
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}
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func (t *Transport) FiltersByIdentities(identities []string) []*Filter {
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return t.filters.FiltersByIdentities(identities)
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}
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func (t *Transport) LoadFilters(filters []*Filter) ([]*Filter, error) {
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return t.filters.InitWithFilters(filters)
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}
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func (t *Transport) InitCommunityFilters(pks []*ecdsa.PrivateKey) ([]*Filter, error) {
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return t.filters.InitCommunityFilters(pks)
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}
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func (t *Transport) RemoveFilters(filters []*Filter) error {
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return t.filters.Remove(filters...)
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}
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func (t *Transport) RemoveFilterByChatID(chatID string) (*Filter, error) {
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return t.filters.RemoveFilterByChatID(chatID)
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}
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func (t *Transport) ResetFilters() error {
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return t.filters.Reset()
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}
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func (t *Transport) ProcessNegotiatedSecret(secret types.NegotiatedSecret) (*Filter, error) {
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filter, err := t.filters.LoadNegotiated(secret)
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if err != nil {
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return nil, err
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}
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return filter, nil
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}
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func (t *Transport) JoinPublic(chatID string) (*Filter, error) {
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return t.filters.LoadPublic(chatID)
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}
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func (t *Transport) LeavePublic(chatID string) error {
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chat := t.filters.Filter(chatID)
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if chat != nil {
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return nil
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}
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return t.filters.Remove(chat)
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}
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func (t *Transport) JoinPrivate(publicKey *ecdsa.PublicKey) (*Filter, error) {
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return t.filters.LoadContactCode(publicKey)
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}
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func (t *Transport) JoinGroup(publicKeys []*ecdsa.PublicKey) ([]*Filter, error) {
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var filters []*Filter
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for _, pk := range publicKeys {
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f, err := t.filters.LoadContactCode(pk)
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if err != nil {
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return nil, err
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}
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filters = append(filters, f)
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}
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return filters, nil
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}
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func (t *Transport) GetStats() types.StatsSummary {
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return t.waku.GetStats()
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}
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func (t *Transport) RetrieveRawAll() (map[Filter][]*types.Message, error) {
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result := make(map[Filter][]*types.Message)
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logger := t.logger.With(zap.String("site", "retrieveRawAll"))
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for _, filter := range t.filters.Filters() {
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msgs, err := t.api.GetFilterMessages(filter.FilterID)
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if err != nil {
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logger.Warn("failed to fetch messages", zap.Error(err))
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continue
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}
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// Don't pull from filters we don't listen to
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if !filter.Listen {
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for _, msg := range msgs {
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t.waku.MarkP2PMessageAsProcessed(common.BytesToHash(msg.Hash))
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}
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continue
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}
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if len(msgs) == 0 {
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continue
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}
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ids := make([]string, len(msgs))
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for i := range msgs {
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id := types.EncodeHex(msgs[i].Hash)
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ids[i] = id
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}
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hits, err := t.cache.Hits(ids)
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if err != nil {
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logger.Error("failed to check messages exists", zap.Error(err))
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return nil, err
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}
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for i := range msgs {
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// Exclude anything that is a cache hit
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if !hits[types.EncodeHex(msgs[i].Hash)] {
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result[*filter] = append(result[*filter], msgs[i])
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logger.Debug("message not cached", zap.String("hash", types.EncodeHex(msgs[i].Hash)))
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} else {
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logger.Debug("message cached", zap.String("hash", types.EncodeHex(msgs[i].Hash)))
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t.waku.MarkP2PMessageAsProcessed(common.BytesToHash(msgs[i].Hash))
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}
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}
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}
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return result, nil
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}
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// SendPublic sends a new message using the Whisper service.
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// For public filters, chat name is used as an ID as well as
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// a topic.
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func (t *Transport) SendPublic(ctx context.Context, newMessage *types.NewMessage, chatName string) ([]byte, error) {
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if err := t.addSig(newMessage); err != nil {
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return nil, err
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}
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filter, err := t.filters.LoadPublic(chatName)
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if err != nil {
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return nil, err
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}
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newMessage.SymKeyID = filter.SymKeyID
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newMessage.Topic = filter.Topic
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return t.api.Post(ctx, *newMessage)
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}
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func (t *Transport) SendPrivateWithSharedSecret(ctx context.Context, newMessage *types.NewMessage, publicKey *ecdsa.PublicKey, secret []byte) ([]byte, error) {
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if err := t.addSig(newMessage); err != nil {
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return nil, err
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}
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filter, err := t.filters.LoadNegotiated(types.NegotiatedSecret{
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PublicKey: publicKey,
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Key: secret,
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})
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if err != nil {
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return nil, err
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}
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newMessage.SymKeyID = filter.SymKeyID
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newMessage.Topic = filter.Topic
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newMessage.PublicKey = nil
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return t.api.Post(ctx, *newMessage)
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}
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func (t *Transport) SendPrivateWithPartitioned(ctx context.Context, newMessage *types.NewMessage, publicKey *ecdsa.PublicKey) ([]byte, error) {
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if err := t.addSig(newMessage); err != nil {
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return nil, err
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}
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filter, err := t.filters.LoadPartitioned(publicKey, t.keysManager.privateKey, false)
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if err != nil {
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return nil, err
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}
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newMessage.Topic = filter.Topic
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newMessage.PublicKey = crypto.FromECDSAPub(publicKey)
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return t.api.Post(ctx, *newMessage)
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}
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func (t *Transport) SendPrivateOnPersonalTopic(ctx context.Context, newMessage *types.NewMessage, publicKey *ecdsa.PublicKey) ([]byte, error) {
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if err := t.addSig(newMessage); err != nil {
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return nil, err
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}
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filter, err := t.filters.LoadPersonal(publicKey, t.keysManager.privateKey, false)
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if err != nil {
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return nil, err
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}
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newMessage.Topic = filter.Topic
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newMessage.PublicKey = crypto.FromECDSAPub(publicKey)
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return t.api.Post(ctx, *newMessage)
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}
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func (t *Transport) PersonalTopicFilter() *Filter {
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return t.filters.PersonalTopicFilter()
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}
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func (t *Transport) LoadKeyFilters(key *ecdsa.PrivateKey) (*Filter, error) {
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return t.filters.LoadEphemeral(&key.PublicKey, key, true)
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}
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func (t *Transport) SendCommunityMessage(ctx context.Context, newMessage *types.NewMessage, publicKey *ecdsa.PublicKey) ([]byte, error) {
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if err := t.addSig(newMessage); err != nil {
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return nil, err
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}
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// We load the filter to make sure we can post on it
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filter, err := t.filters.LoadPublic(PubkeyToHex(publicKey)[2:])
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if err != nil {
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return nil, err
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}
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newMessage.Topic = filter.Topic
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newMessage.PublicKey = crypto.FromECDSAPub(publicKey)
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t.logger.Debug("SENDING message", zap.Binary("topic", filter.Topic[:]))
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return t.api.Post(ctx, *newMessage)
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}
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func (t *Transport) cleanFilters() error {
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return t.filters.RemoveNoListenFilters()
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}
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func (t *Transport) addSig(newMessage *types.NewMessage) error {
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sigID, err := t.keysManager.AddOrGetKeyPair(t.keysManager.privateKey)
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if err != nil {
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return err
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}
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newMessage.SigID = sigID
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return nil
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}
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func (t *Transport) Track(identifiers [][]byte, hash []byte, newMessage *types.NewMessage) {
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if t.envelopesMonitor != nil {
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t.envelopesMonitor.Add(identifiers, types.BytesToHash(hash), *newMessage)
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}
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}
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// GetCurrentTime returns the current unix timestamp in milliseconds
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func (t *Transport) GetCurrentTime() uint64 {
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return uint64(t.waku.GetCurrentTime().UnixNano() / int64(time.Millisecond))
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}
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func (t *Transport) MaxMessageSize() uint32 {
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return t.waku.MaxMessageSize()
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}
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func (t *Transport) Stop() error {
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close(t.quit)
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if t.envelopesMonitor != nil {
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t.envelopesMonitor.Stop()
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}
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return nil
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}
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// cleanFiltersLoop cleans up the topic we create for the only purpose
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// of sending messages.
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// Whenever we send a message we also need to listen to that particular topic
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// but in case of asymettric topics, we are not interested in listening to them.
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// We therefore periodically clean them up so we don't receive unnecessary data.
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func (t *Transport) cleanFiltersLoop() {
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ticker := time.NewTicker(5 * time.Minute)
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go func() {
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for {
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select {
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case <-t.quit:
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ticker.Stop()
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return
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case <-ticker.C:
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err := t.cleanFilters()
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if err != nil {
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t.logger.Error("failed to clean up topics", zap.Error(err))
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}
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}
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}
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}()
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}
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func (t *Transport) WakuVersion() uint {
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return t.waku.Version()
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}
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func (t *Transport) PeerCount() int {
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return t.waku.PeerCount()
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}
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func (t *Transport) Peers() map[string]types.WakuV2Peer {
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return t.waku.Peers()
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}
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func (t *Transport) createMessagesRequestV1(
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ctx context.Context,
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peerID []byte,
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from, to uint32,
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previousCursor []byte,
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topics []types.TopicType,
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waitForResponse bool,
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) (cursor []byte, err error) {
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r := createMessagesRequest(from, to, previousCursor, nil, topics)
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events := make(chan types.EnvelopeEvent, 10)
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sub := t.waku.SubscribeEnvelopeEvents(events)
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defer sub.Unsubscribe()
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err = t.waku.SendMessagesRequest(peerID, r)
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if err != nil {
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return
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}
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if !waitForResponse {
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return
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}
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var resp *types.MailServerResponse
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resp, err = t.waitForRequestCompleted(ctx, r.ID, events)
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if err == nil && resp != nil && resp.Error != nil {
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err = resp.Error
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} else if err == nil && resp != nil {
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cursor = resp.Cursor
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}
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return
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}
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func (t *Transport) createMessagesRequestV2(
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peerID []byte,
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from, to uint32,
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previousStoreCursor *types.StoreRequestCursor,
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topics []types.TopicType,
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) (storeCursor *types.StoreRequestCursor, err error) {
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r := createMessagesRequest(from, to, nil, previousStoreCursor, topics)
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storeCursor, err = t.waku.RequestStoreMessages(peerID, r)
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if err != nil {
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return
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}
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return
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}
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func (t *Transport) SendMessagesRequestForTopics(
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ctx context.Context,
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peerID []byte,
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from, to uint32,
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previousCursor []byte,
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previousStoreCursor *types.StoreRequestCursor,
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topics []types.TopicType,
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waitForResponse bool,
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) (cursor []byte, storeCursor *types.StoreRequestCursor, err error) {
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switch t.waku.Version() {
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case 2:
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storeCursor, err = t.createMessagesRequestV2(peerID, from, to, previousStoreCursor, topics)
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case 1:
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cursor, err = t.createMessagesRequestV1(ctx, peerID, from, to, previousCursor, topics, waitForResponse)
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default:
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err = fmt.Errorf("unsupported version %d", t.waku.Version())
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}
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return
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}
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// RequestHistoricMessages requests historic messages for all registered filters.
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func (t *Transport) SendMessagesRequest(
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ctx context.Context,
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peerID []byte,
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from, to uint32,
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previousCursor []byte,
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previousStoreCursor *types.StoreRequestCursor,
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waitForResponse bool,
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) (cursor []byte, storeCursor *types.StoreRequestCursor, err error) {
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topics := make([]types.TopicType, len(t.Filters()))
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for _, f := range t.Filters() {
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topics = append(topics, f.Topic)
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}
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return t.SendMessagesRequestForTopics(ctx, peerID, from, to, previousCursor, previousStoreCursor, topics, waitForResponse)
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}
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func (t *Transport) SendMessagesRequestForFilter(
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ctx context.Context,
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peerID []byte,
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from, to uint32,
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previousCursor []byte,
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previousStoreCursor *types.StoreRequestCursor,
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filter *Filter,
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waitForResponse bool,
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) (cursor []byte, storeCursor *types.StoreRequestCursor, err error) {
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topics := make([]types.TopicType, len(t.Filters()))
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topics = append(topics, filter.Topic)
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return t.SendMessagesRequestForTopics(ctx, peerID, from, to, previousCursor, previousStoreCursor, topics, waitForResponse)
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}
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func createMessagesRequest(from, to uint32, cursor []byte, storeCursor *types.StoreRequestCursor, topics []types.TopicType) types.MessagesRequest {
|
|
aUUID := uuid.New()
|
|
// uuid is 16 bytes, converted to hex it's 32 bytes as expected by types.MessagesRequest
|
|
id := []byte(hex.EncodeToString(aUUID[:]))
|
|
var topicBytes [][]byte
|
|
for idx := range topics {
|
|
topicBytes = append(topicBytes, topics[idx][:])
|
|
}
|
|
return types.MessagesRequest{
|
|
ID: id,
|
|
From: from,
|
|
To: to,
|
|
Limit: 1000,
|
|
Cursor: cursor,
|
|
Topics: topicBytes,
|
|
StoreCursor: storeCursor,
|
|
}
|
|
}
|
|
|
|
func (t *Transport) waitForRequestCompleted(ctx context.Context, requestID []byte, events chan types.EnvelopeEvent) (*types.MailServerResponse, error) {
|
|
for {
|
|
select {
|
|
case ev := <-events:
|
|
if !bytes.Equal(ev.Hash.Bytes(), requestID) {
|
|
continue
|
|
}
|
|
if ev.Event != types.EventMailServerRequestCompleted {
|
|
continue
|
|
}
|
|
data, ok := ev.Data.(*types.MailServerResponse)
|
|
if ok {
|
|
return data, nil
|
|
}
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
}
|
|
}
|
|
}
|
|
|
|
// ConfirmMessagesProcessed marks the messages as processed in the cache so
|
|
// they won't be passed to the next layer anymore
|
|
func (t *Transport) ConfirmMessagesProcessed(ids []string, timestamp uint64) error {
|
|
return t.cache.Add(ids, timestamp)
|
|
}
|
|
|
|
// CleanMessagesProcessed clears the messages that are older than timestamp
|
|
func (t *Transport) CleanMessagesProcessed(timestamp uint64) error {
|
|
return t.cache.Clean(timestamp)
|
|
}
|
|
|
|
func (t *Transport) SetEnvelopeEventsHandler(handler EnvelopeEventsHandler) error {
|
|
if t.envelopesMonitor == nil {
|
|
return errors.New("Current transport has no envelopes monitor")
|
|
}
|
|
t.envelopesMonitor.handler = handler
|
|
return nil
|
|
}
|
|
|
|
func (t *Transport) ClearProcessedMessageIDsCache() error {
|
|
return t.cache.Clear()
|
|
}
|
|
|
|
func (t *Transport) BloomFilter() []byte {
|
|
return t.api.BloomFilter()
|
|
}
|
|
|
|
func PubkeyToHex(key *ecdsa.PublicKey) string {
|
|
return types.EncodeHex(crypto.FromECDSAPub(key))
|
|
}
|
|
|
|
func (t *Transport) StartDiscV5() error {
|
|
return t.waku.StartDiscV5()
|
|
}
|
|
|
|
func (t *Transport) StopDiscV5() error {
|
|
return t.waku.StopDiscV5()
|
|
}
|
|
|
|
func (t *Transport) ListenAddresses() ([]string, error) {
|
|
return t.waku.ListenAddresses()
|
|
}
|
|
|
|
func (t *Transport) AddStorePeer(address string) (string, error) {
|
|
return t.waku.AddStorePeer(address)
|
|
}
|
|
|
|
func (t *Transport) AddRelayPeer(address string) (string, error) {
|
|
return t.waku.AddRelayPeer(address)
|
|
}
|
|
|
|
func (t *Transport) DialPeer(address string) error {
|
|
return t.waku.DialPeer(address)
|
|
}
|
|
|
|
func (t *Transport) DialPeerByID(peerID string) error {
|
|
return t.waku.DialPeerByID(peerID)
|
|
}
|
|
|
|
func (t *Transport) DropPeer(peerID string) error {
|
|
return t.waku.DropPeer(peerID)
|
|
}
|
|
|
|
func (t *Transport) ProcessingP2PMessages() bool {
|
|
return t.waku.ProcessingP2PMessages()
|
|
}
|
|
|
|
func (t *Transport) MarkP2PMessageAsProcessed(hash common.Hash) {
|
|
t.waku.MarkP2PMessageAsProcessed(hash)
|
|
}
|
|
|
|
func (t *Transport) SubscribeToConnStatusChanges() (*types.ConnStatusSubscription, error) {
|
|
return t.waku.SubscribeToConnStatusChanges()
|
|
}
|